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randomize lines of input text

rl is a command-line tool that reads lines from an input file or stdin,
randomizes the lines and outputs a specified number of lines. It does this
with only a single pass over the input while trying to use as little memory
as possible.

Currently randomize-lines is under development and command-line arguments
may change slightly until a 1.0 release is made.

Users are recommended to use the shuf command instead which should be
available by default. This package may be considered deprecated.